NaturePlus: Message List - Any idea on type of fossil?http://www.nhm.ac.uk/natureplus/community/identification/fossils-rocks?view=discussions
Most recent forum messagesenFri, 21 Feb 2014 23:12:52 GMTJive SBS 4.5.6.0 (http://jivesoftware.com/products/clearspace/)2014-02-21T23:12:52ZenRe: Any idea on type of fossil?http://www.nhm.ac.uk/natureplus/message/41931?tstart=0#41931
<!-- [DocumentBodyStart:fb6af0fc-5f21-4e72-a824-e5fee173dc95] --><div class="jive-rendered-content"><p>Hi Alan</p><p>We find these on the Holderness as well, I think it's a concretion with variable preservation on the outside.</p><p>Sometimes we find these with no cracks on the surface and sometimes we find them were you only have to 'tap' them and the coating falls away.</p><p>Could be the outside has a large pyrite content and is 'rotting' leaving the harder inner nodule that is made of something different.</p><p>Nice find.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>Tabfish</p></div><!-- [DocumentBodyEnd:fb6af0fc-5f21-4e72-a824-e5fee173dc95] -->Fri, 21 Feb 2014 23:12:52 GMThttp://www.nhm.ac.uk/natureplus/message/41931?tstart=0#41931Tabfish2014-02-21T23:12:52Z1 year, 5 months ago0Re: Any idea on type of fossil?http://www.nhm.ac.uk/natureplus/message/41885?tstart=0#41885
<!-- [DocumentBodyStart:19d77186-d641-46a8-a625-1cd1a90e80a4] --><div class="jive-rendered-content"><p>That doesn't really help me much, but thanks for the photo anyway.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>With some things, we have to accept ambiguity; or embark on deeper research, with no guarantee of getting a clearer answer at the end of it all.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>Mike</p></div><!-- [DocumentBodyEnd:19d77186-d641-46a8-a625-1cd1a90e80a4] -->Wed, 19 Feb 2014 20:30:19 GMThttp://www.nhm.ac.uk/natureplus/message/41885?tstart=0#41885MikeHardman2014-02-19T20:30:19Z1 year, 5 months ago0Re: Any idea on type of fossil?http://www.nhm.ac.uk/natureplus/message/41880?tstart=0#41880
<!-- [DocumentBodyStart:f4ed99ba-321c-4ffd-9232-7fd9ce25eba7] --><div class="jive-rendered-content"><p>Think is likely nut. was encased completely but top part was shattered.</p><p>The larger items almost coconut size. Have shown what part of inside of layer looks like.<br/><a href="http://www.nhm.ac.uk/natureplus/servlet/JiveServlet/showImage/2-41880-68403/u4.jpg"><img alt="u4.jpg" class="jive-image-thumbnail jive-image" height="337" onclick="" src="http://www.nhm.ac.uk/natureplus/servlet/JiveServlet/downloadImage/2-41880-68403/450-337/u4.jpg" width="450"/></a></p></div><!-- [DocumentBodyEnd:f4ed99ba-321c-4ffd-9232-7fd9ce25eba7] -->Wed, 19 Feb 2014 18:46:53 GMThttp://www.nhm.ac.uk/natureplus/message/41880?tstart=0#41880Alan c2014-02-19T18:46:53Z1 year, 5 months ago20Re: Any idea on type of fossil?http://www.nhm.ac.uk/natureplus/message/41864?tstart=0#41864
<!-- [DocumentBodyStart:d3497a59-2f56-4511-94b3-c8753a95ff8f] --><div class="jive-rendered-content"><p>Alan,</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>The two main possibilities are:</p><p>- nut</p><p>- concretion</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>You may be able to see more in your specimens than I can see in your photos.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>Some questions:</p><p>1. Are there any ribs around the outside (like lines of longitude)? Many nuts have two or three (or more).</p><p>2. Is there a scar at one end where the ribs (if any) meet? That would be the stem attachment.</p><p>3. Can you see any surface texture? (Such as you might see on a modern nut.)</p><p>4. Can you see any cellular structure in the wall? Concretions would not have that, though sedimentary grains <span style="font-size: 10pt;">could give a similar appearance.</span></p><p>5. Is it symmetrical in any sense?</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>If 'yes' to one or more of those, it is probably a nut.</p><p>If 'no', it is probably a concretion.</p><p>There is a bit of a grey area - where it could be a cast of a nut - which would have no cellular structure, but might display some of the other nutty features.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p><span style="font-size: 10pt;">I have not be able to find definitively IDd nut fossils from Overstrand. But that does not mean they don't exist.</span></p><p style="min-height: 8pt; height: 8pt; padding: 0px;">&#160;</p><p>Mike</p></div><!-- [DocumentBodyEnd:d3497a59-2f56-4511-94b3-c8753a95ff8f] -->Wed, 19 Feb 2014 06:50:05 GMThttp://www.nhm.ac.uk/natureplus/message/41864?tstart=0#41864MikeHardman2014-02-19T06:50:05Z1 year, 5 months ago30Any idea on type of fossil?http://www.nhm.ac.uk/natureplus/message/41861?tstart=0#41861
<!-- [DocumentBodyStart:92899474-8ab7-4668-8820-89745b08901f] --><div class="jive-rendered-content"><p>Found curious little fossil while out on the beach today at Happisburgh in Norfolk.</p><p>Was in the low layer clay type mud. Thinking type of nut?</p><p>Also was some larger around 5- 6 inch type fossils with a flakey type of shell.</p><p>Any idea appreciated.</p></div><!-- [DocumentBodyEnd:92899474-8ab7-4668-8820-89745b08901f] -->Tue, 18 Feb 2014 21:56:25 GMThttp://www.nhm.ac.uk/natureplus/message/41861?tstart=0#41861Alan c2014-02-18T21:56:25Z1 year, 5 months ago40